CN220176147U - Sludge reflux device of secondary sedimentation tank - Google Patents
Sludge reflux device of secondary sedimentation tank Download PDFInfo
- Publication number
- CN220176147U CN220176147U CN202320883020.2U CN202320883020U CN220176147U CN 220176147 U CN220176147 U CN 220176147U CN 202320883020 U CN202320883020 U CN 202320883020U CN 220176147 U CN220176147 U CN 220176147U
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- China
- Prior art keywords
- sludge
- suction pipe
- pipe
- sedimentation tank
- secondary sedimentation
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- 239000010802 sludge Substances 0.000 title claims abstract description 67
- 238000004062 sedimentation Methods 0.000 title claims abstract description 22
- 238000010992 reflux Methods 0.000 title claims abstract description 18
- 238000005273 aeration Methods 0.000 claims abstract description 19
- 239000010865 sewage Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000002028 Biomass Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The utility model discloses a secondary sedimentation tank sludge reflux device, which comprises a secondary sedimentation tank which is horizontally arranged, wherein a first sludge suction pipe is horizontally arranged at the bottom of the secondary sedimentation tank, a plurality of second sludge suction pipes are communicated with both sides of the sludge suction pipes, an aeration pipe is horizontally arranged above the first sludge suction pipe, a plurality of connecting pipes are uniformly communicated with the bottom of the aeration pipe, and the outer ends of the connecting pipes are communicated with the first sludge suction pipes; the utility model has the beneficial effects that: the second sludge suction pipes which are arranged in a fishbone manner are arranged at the two sides of the first sludge suction pipe, so that sludge at the two sides of the first sludge suction pipe can be sucked away and conveyed into the aeration tank together, the uniform sludge backflow proportion is ensured, and the generation of sludge backflow dead angles is reduced; simultaneously, the aeration pipe can back flush the first suction pipe and the second suction pipe, so that the blocking phenomenon in the pipes is timely solved, the sludge is circulated back, and the normal production and operation of the sewage biochemical system are ensured.
Description
Technical field:
the utility model belongs to the field of sewage treatment, and particularly relates to a sludge reflux device of a secondary sedimentation tank.
The background technology is as follows:
in the field of sewage treatment, a sedimentation tank after biological treatment is generally called a secondary sedimentation tank or a final sedimentation tank (final sedimentation tank), and the secondary sedimentation tank has the functions of separating mud from water, clarifying mixed liquor, concentrating sludge and refluxing the separated sludge to a biological treatment section (degradation system); in a biological treatment system, a sufficient and constant biological population must be maintained, so that a part of biosolids (sludge) precipitated in a secondary sedimentation tank must be returned to an aeration tank, the biomass returned to the aeration tank is used for maintaining the required sludge concentration of the system, the more organic matters in a degradation system are, the larger the required biomass is, the returned sludge amount must be ensured for maintaining the required sludge concentration of the system, and the sludge return ratio is the ratio of the returned sludge amount to the inflow amount of the aeration tank. However, in the prior art, only a single pipe of a sludge suction pipeline matched with the sludge feeding of the sludge reflux device stretches into the sludge suction pipeline from the tank wall of the secondary sedimentation tank, when a large amount of sludge is needed for degrading organic matters in the system, a single sludge suction pipe can only suck away sludge near the pipe orifice of the sludge suction pipe, and the sludge at the two sides and the far end of the sludge suction pipe cannot be sucked away in time and conveyed into the aeration tank, so that the sludge reflux proportion is uneven, and a sludge reflux dead angle exists.
The utility model comprises the following steps:
the utility model aims to provide a secondary sedimentation tank sludge reflux device, overcomes the defects of the prior art, and effectively solves the existing problem of uneven sludge reflux proportion.
The utility model comprises the following steps: the utility model provides a two heavy pond mud reflux unit, includes the two heavy ponds that the level set up the bottom of the pool level of two heavy ponds is provided with first suction pipe the both sides of suction pipe all communicate have a plurality of second suction pipe the top level of first suction pipe is provided with the aeration pipe the bottom of aeration pipe evenly communicates has a plurality of connecting pipes (5), the outer end of connecting pipe with first suction pipe is linked together.
Further, the second mud suction pipe is arranged in a fishbone mode.
Further, the inner diameter of the pipe orifice of the first mud suction pipe is larger than that of the second mud suction pipe.
Further, the second suction pipe is communicated with the first suction pipe through a flange.
The utility model has the beneficial effects that: the second sludge suction pipes which are arranged in a fishbone manner are arranged at the two sides of the first sludge suction pipe, so that sludge at the two sides of the first sludge suction pipe can be sucked away and conveyed into the aeration tank together, the uniform sludge backflow proportion is ensured, and the generation of sludge backflow dead angles is reduced; simultaneously, the aeration pipe can back flush the first suction pipe and the second suction pipe, so that the blocking phenomenon in the pipes is timely solved, the sludge is circulated back, and the normal production and operation of the sewage biochemical system are ensured.
Description of the drawings:
FIG. 1 is a cross-sectional view of a front view of the present utility model;
FIG. 2 is a top view of the present utility model;
in the figure, a secondary sedimentation tank 1, a first suction pipe 2, a second suction pipe 3, an aeration pipe 4 and a connecting pipe 5 are arranged.
The specific embodiment is as follows:
for a clearer understanding of technical features, objects, and effects of the present utility model, a specific embodiment of the present utility model will be described with reference to the accompanying drawings:
as shown in fig. 1 to 2, a secondary sedimentation tank sludge reflux device comprises a secondary sedimentation tank 1 which is horizontally arranged, a first sludge suction pipe 2 is horizontally arranged at the bottom of the secondary sedimentation tank 1, two sides of the sludge suction pipe 2 are respectively communicated with a plurality of second sludge suction pipes 3, an aeration pipe 4 is horizontally arranged above the first sludge suction pipe 2, a plurality of connecting pipes 5 are uniformly communicated with the bottom of the aeration pipe 4, the outer ends of the connecting pipes 5 are communicated with the first sludge suction pipes 2, the second sludge suction pipes 3 are arranged in a fishbone type, the inner diameter of a pipe orifice of the first sludge suction pipe 2 is larger than that of the second sludge suction pipe 3, and the second sludge suction pipes 3 are communicated with the first sludge suction pipe 2 through flanges.
In the actual use process, the second mud suction pipe 3 can suck the mud at the two sides of the first mud suction pipe 2 and convey the mud into the aeration tank; because the output power of the sludge reflux pump arranged on the first sludge suction pipe 2 is fixed, the suction force at the joint of the first sludge suction pipe 2 and the sludge reflux pump is maximum, the suction force is smaller when the suction force reaches the outer end of the sludge suction pipe, and the second sludge suction pipe 3 is arranged in a fishbone type manner, so that the suction force in the pipe can be maximally utilized to suck the sludge in the secondary sedimentation tank 1; when the first mud suction pipe 2 and the second mud suction pipe 3 are blocked, the aeration pipe 4 can be filled with air at high pressure to perform back flushing dredging of sludge in the pipe.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (4)
1. The utility model provides a two heavy pond mud reflux unit which characterized in that: including two heavy ponds (1) of level setting the bottom of the pool level of two heavy ponds (1) is provided with first suction pipe (2) the both sides of first suction pipe (2) all communicate have a plurality of second suction pipe (3) the top level of first suction pipe (2) is provided with aeration pipe (4) the bottom of aeration pipe (4) evenly communicates has a plurality of connecting pipes (5), the outer end of connecting pipe (5) with first suction pipe (2) are linked together.
2. The secondary sedimentation tank sludge reflux device according to claim 1, wherein: the second mud suction pipes (3) are arranged in a fishbone mode.
3. The secondary sedimentation tank sludge reflux device according to claim 1, wherein: the inner diameter of the pipe orifice of the first mud suction pipe (2) is larger than that of the second mud suction pipe (3).
4. The secondary sedimentation tank sludge reflux device according to claim 1, wherein: the second suction pipe (3) is communicated with the first suction pipe (2) through a flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320883020.2U CN220176147U (en) | 2023-04-19 | 2023-04-19 | Sludge reflux device of secondary sedimentation tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320883020.2U CN220176147U (en) | 2023-04-19 | 2023-04-19 | Sludge reflux device of secondary sedimentation tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220176147U true CN220176147U (en) | 2023-12-15 |
Family
ID=89106772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320883020.2U Active CN220176147U (en) | 2023-04-19 | 2023-04-19 | Sludge reflux device of secondary sedimentation tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220176147U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117585743A (en) * | 2024-01-18 | 2024-02-23 | 浙江浙达水业有限公司 | Sewage treatment regulating tank and regulating method |
-
2023
- 2023-04-19 CN CN202320883020.2U patent/CN220176147U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117585743A (en) * | 2024-01-18 | 2024-02-23 | 浙江浙达水业有限公司 | Sewage treatment regulating tank and regulating method |
| CN117585743B (en) * | 2024-01-18 | 2024-04-16 | 浙江浙达水业有限公司 | Sewage treatment regulating tank and regulating method |
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